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Page 3
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Cost
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Item
Description
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$14.00 |
M313c
Here is a very nice, above average quality, larger Pyrite nugget from Peru.
It measures 3 1/8" x nearly 2 3/4" x 1 1/2" and has a natural shiny finish.
This cool Pyrite nugget has Quartz crystals scattered about and is a one of
a kind, very well defined specimen that will not be duplicated.
Another photo.
Pyrite, or Iron Pyrite, is an Iron sulfide with isometric Crystals that
usually appear as cubes. It is brittle and can break or powder easily.
Its metallic luster and brass yellow hue have earned it the nickname of "fool's
gold" due to many miners mistaken it for the real thing. Ironically,
small quantities of actual gold are sometimes found in Pyrite. It is
the most common of the sulfide minerals and is usually found with other sulfides
or oxides in Quartz veins, sedimentary or metamorphic rocks.
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Pyrite Nugget
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$35.00 |
M314c
A nice specimen of natural Copper from Keweenaw Peninsula, Michigan. This
is natural native copper which has been removed from the matrix rock which
was surrounding it. It is the natural native copper just as it formed
in the rock. It weighs in at 1 lb and 8 oz.
Another photo.
Copper is a reddish colored metal with a high electrical and thermal
conductivity. It has its characteristic color because it reflects red
and orange light and absorbs other frequencies in the visible spectrum due
to its band structure. It is in the same family as Silver and Gold and
is a malleable metal. It is beautiful natural or polished.
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Copper Freeform
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$45.00 |
M315b
Here is a very nice quality specimen of White Apophyllite. This beautiful
mineral measures 6" x 4 1/2" x 2" and has a natural, unpolished appearance
with sparkly iridescence.
Apophyllite, a Zeolite, is Silicate mineral with very well defined clear
Crystals and is very popular as a collector's mineral. The Crystal structure
will refract like in obvious rainbows and can form "natural pyramids" when
tumbled.
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Apophyllite
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$50.00 |
M316b
This is a larger, clear Calcite Rhombus with many occlusions through out the
entire piece. It measures approximately 3 1/2" x 2 1/2" x 2 1/2".
The appearance of the Rhombus is unique in that it appears to have a slight
Off-White to Yellowish hue when held at angle and then is completely clear
when held in a different direction. It is an interesting addition for
your collection.
Calcite is a Carbonate mineral that is most widely distributed on the
Earth's surface. It is a common constituent of sedimentary rocks with
Limestone in particular. A Calcite formation can take on many different
shapes and sizes which is dependent on the location, ground water occurrence
and temperature. Calcite is usually white or colorless but can be gray,
red, yellow, green, blue, violet, brown or black. The deeper the color
is usually indicative of the definitive impurities from the earth or water.
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Calcite
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$15.00 |
M300b
This is a very pretty, desert Sand Selenite specimen from Morocco. This specimen
measures 3 1/8" x 3 3/8" x 3". This unusual piece has a soft Copper
Brown color with a real unique shape. A one of a kind gift for that
one of a kind person. Another photo.
Another photo.
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, is
a variety of Crystalline Gypsum. Gypsum is a very soft mineral composed
of Calcium Sulfate. Desert Roses are rosette shaped Gypsum with outer
druze of sand or with sand throughout and often sand colored.
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Desert Rose
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$30.00 |
M317b
Here is an interesting find. This is a very nice
specimen of Stibnite from China. It measures 2 1/4" x 1 1/4" x
1 1/4" and has a sparkly Grey metallic color. This is an interesting
specimen that has an unique shape and appearance.
Another photo.
Stibnite, also known as Antimonite, is a Sulfide mineral that forms
grey Crystals. It is the most important source for the rare Metalloid
Antimony. It is used in the manufacture of fireworks, batteries, safety
matches and mascara.
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Stibnite
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$45.00 |
M302c
This is a nice quality and beautiful specimen of polished
Malachite-Azurite from Zaire, Africa. The specimen measures 3 1/8" x 2 3/4"
x 1 1/4". The Malachite-Azurite is polished on all sides.
Another photo.
Malachite is a Copper Carbonate mineral that often forms botryoidal,
fibrous or stalagmitic masses. It is often the result of the weathering
of Copper Ores and is commonly found with Azurite, Goethite and Calcite.
It is typically associated with Copper deposits including Limestone which
is the source of the Carbonate. Malachite is found in many regions world
wide and is usually shaded green in color.
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Malachite-Azurite
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$10.00 |
M306c
This is an interesting Barite specimen from Meade County, South Dakota.
These nice Barite Crystals rest on a Yellow Calcite matrix. The entire specimen
measures 2 3/8" x 1 3/4" x 1 3/4" and has a nice sparkly, shiny appearance.
A very cool specimen. Another photo
Another photo
Barite is a mineral consisting of Barium sulfate and is generally white
or colorless. It is used in the manufacture of paints and paper.
Although Barite contains a 'heavy' metal, Barium, it is not considered to
be a toxic chemical because of its extreme insolubility.
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Barite
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$30.00 |
M309c This is something
different for any collector. Here is a very nice, very pretty Selenite
Crystal from Mexico. It measures 7" x 4" x 1" and has a natural shiny
appearance. A great conversation piece or use it wire wrap a new piece
of jewelry.
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are
the four Crystalline varieties of Gypsum. It is a very soft material
composed of Calcium Sulfate. Selenite is often transparent and colorless.
If color is present it is often due to impurities or presence of other minerals.
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Selenite Crystal
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$14.00 |
M305b
Here is an Apophyllite-Quartz mineral combination. This amazing mineral
measures 4 3/4" x 2 5/8" x 2 1/8" and has a super sparkly appearance.
This material is from Jalgaon, India. A great way to begin your mineral collection!!
Another photo.
Apophyllite, a Zeolite, is Silicate mineral with very well defined clear
Crystals and is very popular as a collector's mineral. The Crystal structure
will refract like in obvious rainbows and can form "natural pyramids" when
tumbled.
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Apophyllite-Quartz
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$35.00 |
M307b
This is an interesting mineral combination! Here is an Apophyllite-Stilbite
mix. This fantastic mineral measures 4 1/2" x 3 1/4" x 2 7/8" and has a super
sparkly appearance. A great way to begin your mineral collection with
a super combo mineral!! Another photo.
Apophyllite, also a Zeolite, is Silicate mineral with very well defined
clear Crystals and is very popular as a collector's mineral. The Crystal
structure will refract like in obvious rainbows and can form "natural pyramids"
when tumbled.
Stilbite is another Silicate mineral from the Zeolite family.
It is often characterized by its sheaf like aggregates. The color is
usually white and when the cleavage is perfect, will have a distinct pearly
luster.
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Apophyllite-Stilbite
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$25.00 |
M303c
Here is a very interesting Prehnite specimen. It measures 4 1/4"
x 4 3/4" x 3" and has a lightly frosted Green appearance. Close observation
will reveal 2 small Okenite Crystals on the Prehnite and 2 Calcite Crystals
that are in the Gray matrix. This very different and pretty mineral
is from the Poona area of India. Absolutely amazing.
Another photo.
Prehnite is a Phyllosilicate mixture of Calcium and Aluminum.
Although it is not a Zeolite, it is often associated with them and with Datolite
and Calcite, in veins and cavities of Basaltic rocks, sometimes in Granites,
Syenites or Gneisses. The color varies from light green to grey to white
to yellow or a mix of colors. It is translucent.
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Prehnite
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$35.00 |
M304c
Here is something different for the mineral collector. This
is a very nice, bright Yellow Pyrite and White Quartz specimen in a dark Slate
matrix. It measures 3 1/2" x 5 1/4" x 1 1/4" and does not have any polish.
A really neat, unique mineral to add to your collection.
Another photo.
Sulfur is an abundant, tasteless, multivalent non metal mineral.
In its native form, it is a yellow crystalline solid. It can be found
as a pure element or as Sulfide and/or Sulfate minerals. It is primarily
used commercially in fertilizers but is also widely used in gunpowder, matches,
insecticides and fungicides. It may have a faint odor similar to that
of matches which is often from the composition of the hydrogen in the sulfuric
compounds. When heated, Sulfur will turn into a blood red liquid and
when burned it emits a blue flame and the peculiar, notable odor.
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Pyrite-Quartz
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$40.00 |
M312c
Here is something different for the mineral collector.
This is a very nice, good quality Vera Cruz Amethyst Crystal. The specimen
measures 2 1/2" x 1 1/2" x nearly 3/4" The larger Crystal has a very
nice soft Lavender color with the smaller one having a hint of the same pretty
color. Another photo.
Quartz is the second most common mineral in the Earth's continental
crust. It is mainly composed of Silica or Silica based minerals.
Although Quartz is known by a variety of names, the most important distinction
between types of Quartz is that of macro-crystalline, individual crystals
visible to the unaided eye, and micro-crystalline, where aggregates of crystals
are only visible under high magnification. There are many forms of Quartz
including Chalcedony, Amethyst, Citrine, and Carnelian which are results of
mineral impurities or heat treatments.
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Vera Cruz Amethyst Crystal Cluster
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$65.00 |
M301b
Here is an above average quality of a larger specimen
of Hemimorphite Crystals setting on a dark Rust base of Limonite. It
measures 6 1/4" x over 5 1/2" x 2 7/8" with a natural rough appearance
and many differently shaped translucent Grey and Clear Crystals. A different
mineral for the different collector. This material is from Mexico.
Another photo.
Hemimorphite is a sorosilicate mineral that is chiefly associated with
Smithsonite. It commonly forms crystalline crusts and layers and also
massive, granular, rounded aggregates or finely shaped clusters of crystals.
It may fluorescence a strong green in UV short wave light and weak pink in
UV long wave light.
Limonite is an ore consisting of a mixture of hydrated Iron Oxide-Hydroxide
of varying composition of minerals such as Goethite, Lepidocrocite, or Jarosite.
It has been mined with Hematite as an Ore for the production of Iron. Limonite
is heavy and has a yellow-brown color. It is often used as the pigment
ochre in many paints.
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Hemimorphite-Limonite
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$12.00 |
M308b
This is a Ruby Mica set of specimens. It is approximately
5 pieces or the equivalent equal to 1 pound. The pieces range in measurements
of 2" to over 6". This Muscovite Mica is mined in Custer County, South
Dakota and will be shipped to you as it comes out right from the mine.
A great choice in minerals for any collector. Please remember these
pieces do come in random sizes, therefore no choice can be given.
Mica is from the group of sheet Silicate minerals. Mica is widely
distributed and occurs in igneous, metamorphic and sedimentary regions throughout
the world. Large Mica Crystals are used for various applications and
are typically mined from Granitic Pegmatites. It has a high dielectric
strength and excellent chemical stability which makes it favorable in the
manufacturing of capacitors for radio frequency applications. It is
also used in the manufacturing of glass that is used in stoves and kerosene
heaters because it is heat resistant.
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Ruby Mica
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$45.00 |
M311c
Here is a nice, above average quality, Sand Selenite Rose from
Mexico. This specimen measures 4 3/4" x 4 1/4" x 4" and has a soft Grey
color. This is a unique mineral that would make a nice addition to your
collection. Selenite, also known as Satin Spar, Desert Rose and Gypsum
Flower, is a variety of Crystalline Gypsum. Gypsum is a very soft mineral
composed of Calcium Sulfate. Gypsum Flowers are rosette shaped Gypsum
with spreading fibers and can include an outer druze of sand or with sand
throughout. The difference between Desert Roses and Gypsum Flowers is
that Desert Roses look like roses, whereas, gypsum flowers are a myriad of
shapes.
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Sand Selenite Rose
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$18.00 |
M318c
Here is a nice, above average quality, Sand Selenite Rose from
Mexico. This specimen measures 4 1/2" x 3" x 2 3/4" and has a soft Grey
color. This is a unique mineral that would make a nice addition to your
collection. Another photo.
Another photo.
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, is
a variety of Crystalline Gypsum. Gypsum is a very soft mineral composed
of Calcium Sulfate. Gypsum Flowers are rosette shaped Gypsum with spreading
fibers and can include an outer druze of sand or with sand throughout.
The difference between Desert Roses and Gypsum Flowers is that Desert Roses
look like roses, whereas, gypsum flowers are a myriad of shapes.
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Sand Selenite Rose
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$40.00 |
M310b
This is a very pretty, above average quality, larger, desert Selenite flower
specimen from China. This specimen measures 5 1/4" x 11 1/2" x 4 3/8". This
unusual piece has a soft Beige color with White accents resulting in a real
unique shape. A one of a kind gift for that one of a kind person.
Another photo.
Another photo.
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, is
a variety of Crystalline Gypsum. Gypsum is a very soft mineral composed
of Calcium Sulfate. Desert Roses are rosette shaped Gypsum with outer
druze of sand or with sand throughout and often sand colored.
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Selenite Rose
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